Improvement in steam-pump



@with 'listes ste-'nt @ffice WILLIAM M. HENDERSON, QF PHILADEIIHIA, PENNSYLVANIA.

Letters Patent No. 65,911, dated June 18, 1867.

IMPROVEMENT IN STEAM-PUMP.

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TO ALL WHM- IT-MAY CONCERN:

Be it known that I, WILLIAM M. HENDERSON, of the city of Philadelphia, and Stute of Pennsylvania, halve linvented a ne1 und useful Improvementin the Mode of Constructing Stcain-Plunger Pumps; und I do hereby' declare the following to be a full, cleo-r, and exact description of the saine, reference being had to the aecompanying drawing, making :ipart o t` this specicution, undto thc letters of reference marked thereon, in which- Figure 1 is a sectional elevation showing the general arrangement.

Figure 2, a front lView ofthe same.-

Figure 3, a detail of the vulve-stem; and

Figure l shows the manner of formin` the eccentric pin on the end of shaft.

The object of this invention is a plungenpump, actuated by steam 'or other elastic luid, with a vien' to strength, compadtness, andsimplicity of details, adapted to mines, steam vessels, rolling-mills` and other rough usage, Where u failure to perform by a derangcment of complicated parts would be dangerous, and consists in the construction of a single-acting plunger-pump, enveloped in a water-box, ivhich answers the treble purpose of a vacuum-chamber, pocket for receiving the deposit of extraneous matter drawn in with the injection water, and also affords a sta-biellese for the small barrel of the pump g the steam-cylinder being rigidly connected to vvit by a stout housing. `Also in the direct manner of operating the valve, hereafter more fully described.

A is an inverted steam-cylinder the steam-piston, the rod C of which is made stout and long enough to answer as the ram of the pump D placed beneath, and far enough apart to allow oi' the cross-head arm E making the determined stroke; rotury motion being imparted therefrom 'by u connecting-rod, F, to a crank-plate, G, whose shaft revolves in a bea-ring, H, cast on the cylinder lic-ud. The slide-Volvo Isis operated by means of a.

slot-headed valve-stem, J, as shown on iig. 3, direetly'from :in eccentric pin, K, turned ont-hc end and in onev piece with the shaft, which is made. large so that the pin will be contained Within the aren. of' its 'cross-section, as shown by iig. The pump is of the variety known as the common plunger-pump 5. thebarrel beingsurroundcd by an external casing; the space between -the two forming a vacuum-chamber. 1Ihis is also a pocket for receiving any deposit contained in the water, which can be discharged, as it accumulates, bya plug'atthe bottom of said chamber. Another advantage of this external casing is that it forms un expanded case for theV diminutive barrel of the pump. The steam-cylinder is rigidly connectedv to this casing by standards L L; the whole forming' avstout framework on a broad base-plate, M, which may be bolted to a foundation in the usual manner of securing steam engines. The induction and delivery-valves are contained in separate boxes outside, and are attached respectively to the vacuum-chamber at N N.

What I claim as my invention, and desire to secure by Letters Patent, is-

The arrangement of the pump, steam-cylinder, land housing, as described.

The arrangement of o vacuum-chamber, enveloping the pump barrel, substantially in the manner and for the purposes represented. l

-The arrangement oi thecross-head arm E, connecting-rod F, eccentric pin-shaft K, and slot-headed valve stem J, when constructed and operating conjointly in the manner and for the purposes herein set forth.

WILLIAM M. HENDERSON.

Witnesses:

N. S. BRINTON, J. P. BRIN'roN. 

